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General
Easy
Question
A resistance & ideal inductor is connected in the A.C. circuit. Here 
are the reading of three hotwire ideal voltmeter
- informations are insufficient to decide
The correct answer is:
Related Questions to study
physics-
The A.C. circuit shown in figure. Find the frequency (
) of the AC voltage source so that current through the source will be in same phase as of voltage of source.
The A.C. circuit shown in figure. Find the frequency () of the AC voltage source so that current through the source will be in same phase as of voltage of source.
physics-General
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Find the power factor of the circuit
Find the power factor of the circuit
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In the figure the reading of voltmeter is
In the figure the reading of voltmeter is
physics-General
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In the figure, if 
?
In the figure, if ?
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A block of mass ‘m’ is attached to a spring in natural length of spring constant ‘k’. The other end A of the spring is moved with a constant velocity v away from the block. Find the maximum extension in the spring
A block of mass ‘m’ is attached to a spring in natural length of spring constant ‘k’. The other end A of the spring is moved with a constant velocity v away from the block. Find the maximum extension in the spring
physics-General
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The switch in the circuit pictured is in position a for a long time. At t = 0 the switch is moved from a to b. The current through the inductor will reach its first maximum after moving the switch in a time:
The switch in the circuit pictured is in position a for a long time. At t = 0 the switch is moved from a to b. The current through the inductor will reach its first maximum after moving the switch in a time:
physics-General
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The circuit shown in figure consisting of three identical lamps and two coils is connected to a direct current source. The ohmic resistance of the coils is negligible. After some time switch S is opened. Which of the following statement(s) is/are correct for the instant immediately after opening the switch?
The circuit shown in figure consisting of three identical lamps and two coils is connected to a direct current source. The ohmic resistance of the coils is negligible. After some time switch S is opened. Which of the following statement(s) is/are correct for the instant immediately after opening the switch?
physics-General
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The diagram shows a solenoid carrying time varying current I = I0 t (I0 is constant) On the axis of this solenoid a conducting ring is being placed as shown in figure. The mutual inductance of the ring and the solenoid is M and self inductance of the ring is L. If the resistance of the ring is R then the maximum current which can flow through the ring is
The diagram shows a solenoid carrying time varying current I = I0 t (I0 is constant) On the axis of this solenoid a conducting ring is being placed as shown in figure. The mutual inductance of the ring and the solenoid is M and self inductance of the ring is L. If the resistance of the ring is R then the maximum current which can flow through the ring is
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The maximum compression in the spring
The maximum compression in the spring
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A solenoid is oriented end-on so that its opening is perpendicular to the circuit containing the two light bulbs as drawn in figure C1. For figure C2 and C3, a shorting wire of negligible resistance is added as shown. Assume that the magnetic field from the solenoid, shown coming out of the plane of the page, decreases uniformly with time at the same rate for each circuit. Rank the circuits for the brightness of the bulb labeled R1 from brightest to dimmest.
A solenoid is oriented end-on so that its opening is perpendicular to the circuit containing the two light bulbs as drawn in figure C1. For figure C2 and C3, a shorting wire of negligible resistance is added as shown. Assume that the magnetic field from the solenoid, shown coming out of the plane of the page, decreases uniformly with time at the same rate for each circuit. Rank the circuits for the brightness of the bulb labeled R1 from brightest to dimmest.
physics-General
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A wire frame as shown in figure is made to rotate about a vertical axis passing through O. There exists a uniform horizontal magnetic field of induction B = 1 Tesla if 
If the frame rotates (slowly) about 'O' with angular velocity directed along Z-axis having magnitude w = 4rad/s, the potential difference between O & B is
A wire frame as shown in figure is made to rotate about a vertical axis passing through O. There exists a uniform horizontal magnetic field of induction B = 1 Tesla if If the frame rotates (slowly) about 'O' with angular velocity directed along Z-axis having magnitude w = 4rad/s, the potential difference between O & B is
physics-General
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There exists a uniform but time varying magnetic field B = a + bt normal to plane of paper in a cylindrical region as shown. A rectangular conducting loop is placed as shown. Induced emf in branches AB and BC are
There exists a uniform but time varying magnetic field B = a + bt normal to plane of paper in a cylindrical region as shown. A rectangular conducting loop is placed as shown. Induced emf in branches AB and BC are
physics-General
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In given figure, a wire loop has been bent so that it has three segments: segment ab (a quarter circle), bc (a square corner), and ca (straight). Here are three choices for a magnetic field through the loop:
Where 
is in milliteslas and t is in seconds. If the induced current in the loop due to 
are 
respectively then
In given figure, a wire loop has been bent so that it has three segments: segment ab (a quarter circle), bc (a square corner), and ca (straight). Here are three choices for a magnetic field through the loop:
Where is in milliteslas and t is in seconds. If the induced current in the loop due to are respectively then
physics-General
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Three wire loops and an observer are positioned as shown in the figure. From the observer's point of view, a current I flows counterclockwise in the middle loop, which is moving towards the observer with a velocity v. Loops A and B are stationary. This same observer would notice that
Three wire loops and an observer are positioned as shown in the figure. From the observer's point of view, a current I flows counterclockwise in the middle loop, which is moving towards the observer with a velocity v. Loops A and B are stationary. This same observer would notice that
physics-General
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At t = 0 a charge q is at the origin and moving in the y-direction with velocity 
in a magnetic field that is for y > 0 out of page and given by 
into the page and given 
The charge's subsequent trajectory is shown in the sketch. From this information, we can deduce that
At t = 0 a charge q is at the origin and moving in the y-direction with velocity in a magnetic field that is for y > 0 out of page and given by into the page and given The charge's subsequent trajectory is shown in the sketch. From this information, we can deduce that
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