Physics-
General
Easy
Question
Five cells of emf’s 1V, 2V, 3V, 2V and 1V and having internal resistances 1,2,3,2 and 1 ohm respectively are connected as shown in figure
The correct answer is:
Related Questions to study
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A lead wire and an iron wire are connected in parallel. Their respective resistiuity are in the ratio 49 : 24. The lead wire carries 80% more current than the iron wire and the iron wire is 47% longer than the lead wire. The ratio of cross-sectional area of lead wire to that of the iron wire is
A lead wire and an iron wire are connected in parallel. Their respective resistiuity are in the ratio 49 : 24. The lead wire carries 80% more current than the iron wire and the iron wire is 47% longer than the lead wire. The ratio of cross-sectional area of lead wire to that of the iron wire is
physics-General
physics-
Two identical resistors with resistance R are connected in the two circuits drawn. The battery in both circuits is a 12 volt ideal battery. Which statement is correct?
Two identical resistors with resistance R are connected in the two circuits drawn. The battery in both circuits is a 12 volt ideal battery. Which statement is correct?
physics-General
physics-
The equivalent resistance between the terminal points A and B in the network shown in figure is
The equivalent resistance between the terminal points A and B in the network shown in figure is
physics-General
physics-
In the circuit shown, which of the following statements is correct?
In the circuit shown, which of the following statements is correct?
physics-General
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A charge +2q moves vertically upwards with speed v, a second charge – q moves horizontally to the right with the same speed v, and a third charge + q moves horizontally to the right with the same speed v. The point P is located a perpendicular distance a away from each charge as shown in the figure. The magnetic field at point P is
A charge +2q moves vertically upwards with speed v, a second charge – q moves horizontally to the right with the same speed v, and a third charge + q moves horizontally to the right with the same speed v. The point P is located a perpendicular distance a away from each charge as shown in the figure. The magnetic field at point P is
physics-General
physics-
The coils C1 and C2 have same number of turns and carry equal currents in the same sense. They subtend the same angle q to P. If the magnetic field produced by C1 at P is B then that produced by C2 will be
The coils C1 and C2 have same number of turns and carry equal currents in the same sense. They subtend the same angle q to P. If the magnetic field produced by C1 at P is B then that produced by C2 will be
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physics-
After the switch shown in figure A is closed, there is current i through resistance R. Figure B indicates current variation curves a, b, c and d for four sets of values of R and capacitance C: (1) R0 and C0, (2) 2R0 and C0, (3) R0 and 2C0, (4) 2R0 and 2C0. Which set goes with which curve?
After the switch shown in figure A is closed, there is current i through resistance R. Figure B indicates current variation curves a, b, c and d for four sets of values of R and capacitance C: (1) R0 and C0, (2) 2R0 and C0, (3) R0 and 2C0, (4) 2R0 and 2C0. Which set goes with which curve?
physics-General
physics-
A capacitor of capacitance C is connected to two voltmeters A and B. A is ideal, having infinite resistance, while B has resistance R. The capacitor is charged and then the switch S is closed. The readings of A and B will be equal
A capacitor of capacitance C is connected to two voltmeters A and B. A is ideal, having infinite resistance, while B has resistance R. The capacitor is charged and then the switch S is closed. The readings of A and B will be equal
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physics-
The capacitor shown in figure 1 is charged by connecting switch S to contact a. If switch S is thrown to contact b at time t = 0, which of the curves in figure 2 represents the magnitude of the current through the resistor R as a function of time?
The capacitor shown in figure 1 is charged by connecting switch S to contact a. If switch S is thrown to contact b at time t = 0, which of the curves in figure 2 represents the magnitude of the current through the resistor R as a function of time?
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physics-
A metal ball of radius R is surrounded by a homogeneous medium of dielectric constant K and resistivity r. The ball is given a charge Q at t = 0, which starts leaking through the medium towards infinity. After how much time will the charge on the ball become Q/2?
A metal ball of radius R is surrounded by a homogeneous medium of dielectric constant K and resistivity r. The ball is given a charge Q at t = 0, which starts leaking through the medium towards infinity. After how much time will the charge on the ball become Q/2?
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physics-
Time 't0' for which S1 was closed (here C is the capacitance of the capacitor)
Time 't0' for which S1 was closed (here C is the capacitance of the capacitor)
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physics-
Two identical blocks A and B are placed on two inclined planes as shown in diagram. Neglect air resistance and friction Read the following statements and choose the correct options
Statements I: Kinetic energy of ‘A’ on sliding to J will be greater than the kinetic energy of B on falling vertically to M. Statements II: Acceleration of ‘A’ will be greater than acceleration of ‘B’ when both are released to slide on inclined planes.
Statements III: Work done by external agent to move block slowly from position B to O is negative
Two identical blocks A and B are placed on two inclined planes as shown in diagram. Neglect air resistance and friction Read the following statements and choose the correct options
Statements I: Kinetic energy of ‘A’ on sliding to J will be greater than the kinetic energy of B on falling vertically to M. Statements II: Acceleration of ‘A’ will be greater than acceleration of ‘B’ when both are released to slide on inclined planes.
Statements III: Work done by external agent to move block slowly from position B to O is negative
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physics-
Two moles of 
at temperature T0 and 3 moles of 
at temperature 2T0 are allowed to mix together in a closed adiabatic vessel. The resulting mixture finally comes in thermal equilibrium. Then,
Two moles of at temperature T0 and 3 moles of at temperature 2T0 are allowed to mix together in a closed adiabatic vessel. The resulting mixture finally comes in thermal equilibrium. Then,
physics-General
physics-
In the system shown in the figure m1 > m2. System is held at rest by thread BC. Just after the thread BC is burnt :
In the system shown in the figure m1 > m2. System is held at rest by thread BC. Just after the thread BC is burnt :
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physics-
The sphere at P is given a downward velocity v0 and swings in a vertical plane at the end of a rope of l = 1 m attached to a support at O. The rope breaks at angle 30° from horizontal, knowing that it can withstand a maximum tension equal to three times the weight of the sphere. Then the value of v0 will be: 
The sphere at P is given a downward velocity v0 and swings in a vertical plane at the end of a rope of l = 1 m attached to a support at O. The rope breaks at angle 30° from horizontal, knowing that it can withstand a maximum tension equal to three times the weight of the sphere. Then the value of v0 will be:
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