Physics-
General
Easy
Question
The graph shows the current versus the voltage in a driven RLC circuit at a fixed frequency. The arrow indicates the direction that this is curve is drawn as time progresses. In this plot, the
- Current lags the voltage by about 90 degrees
- Current leads the voltage by about 90 degrees
- Current and voltage are in phase
- Current and voltage are 180 degrees out of phase
The correct answer is: Current leads the voltage by about 90 degrees
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The conducting connector ab mass m and length L can freely slide on a horizontal long conducting parallel rails connected by capacitor C at one ends (as shown in figure). A non conducting light spring (spring const. K) connected to the connector ab and it is in a relaxed state. The whole system is placed in uniform magnetic field of strength B directed into the plane of rails (as shown in figure) Now at time t = 0, connector is suddenly given a velocity V0 in rightward direction. If resistance and self inductance of circuit is negligible then
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The conducting connector ab mass m and length L can freely slide on a horizontal long conducting parallel rails connected by capacitor C at one ends (as shown in figure). A non conducting light spring (spring const. K) connected to the connector ab and it is in a relaxed state. The whole system is placed in uniform magnetic field of strength B directed into the plane of rails (as shown in figure) Now at time t = 0, connector is suddenly given a velocity V0 in rightward direction. If resistance and self inductance of circuit is negligible then
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The conducting connector ab mass m and length L can freely slide on a horizontal long conducting parallel rails connected by capacitor C at one ends (as shown in figure). A non conducting light spring (spring const. K) connected to the connector ab and it is in a relaxed state. The whole system is placed in uniform magnetic field of strength B directed into the plane of rails (as shown in figure) Now at time t = 0, connector is suddenly given a velocity V0 in rightward direction. If resistance and self inductance of circuit is negligible then
The acceleration of connector as a function of x
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:
1) 
2) 
3) 
where is in militias and t is in seconds. If the induced current in the loop due to 
and 
are i1 , i2 and i3 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:
1)
2)
3)
where is in militias and t is in seconds. If the induced current in the loop due to and are i1 , i2 and i3 respectively then
physics-General
