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General
Easy
Question
Five identical parallel conducting plates each of area A have separation ‘d’ between successive surfaces. The plates are connected to the terminal of a battery as shown in the fig. The effective capacitance of the circuit is
The correct answer is:
Related Questions to study
physics-
Some light bulbs are conected in parallel to a 120 V source as shown in the figure. Each bulb dissipates an average power of 60 W.The circuit has a fuse F that burns out when the current in the circuit exceeds 9 A. Determine the largest number of bulbs of the following, that can be used in the circuit without burning out the fuse
Some light bulbs are conected in parallel to a 120 V source as shown in the figure. Each bulb dissipates an average power of 60 W.The circuit has a fuse F that burns out when the current in the circuit exceeds 9 A. Determine the largest number of bulbs of the following, that can be used in the circuit without burning out the fuse
physics-General
physics-
In the circuit shown the variable resistance is so adjusted that the ammeter reading is same in both the position 1 and 2 of the key. The reading of ammeter is 2A. If E = 10 V, then x is
In the circuit shown the variable resistance is so adjusted that the ammeter reading is same in both the position 1 and 2 of the key. The reading of ammeter is 2A. If E = 10 V, then x is
physics-General
physics-
The circuit shown has an ideal ammeter with zero resistance and four identical light bulbs which are initially illuminated. A person removes the bulb R4 from its socket there by permanently breaking the electrical circuit at that point. Which statement(s) is/are true about the circuit after removing the bulb?
The circuit shown has an ideal ammeter with zero resistance and four identical light bulbs which are initially illuminated. A person removes the bulb R4 from its socket there by permanently breaking the electrical circuit at that point. Which statement(s) is/are true about the circuit after removing the bulb?
physics-General
physics-
For the circuit shown in the figure, potential difference 
is
For the circuit shown in the figure, potential difference is
physics-General
physics-
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
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
physics-General
physics-
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
physics-
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
physics-General
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?
physics-General
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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