61. Filament in traditional incandescent bulb is made up of which metal?
62. Calculate the electric current when a generator of 220 V output connected with a motor of 1100 W power?
63. A conducting wire is dropped along East-West direction, then
64. Consider the following image.

A proton enters a magnetic field at right angles to it, as shown above. The direction of force acting on the proton will be
A proton enters a magnetic field at right angles to it, as shown above. The direction of force acting on the proton will be
65. A current I flows through a resistor. A source maintains a potential difference of V across the resistor. The energy supplied by the source in time t is
66. A common transformer operates on . . . . . . . .
67. How much work is done in moving the charge of 5C across two points with a potential difference of 13V?
68. Four resistors of 1 Ω are connected in series order, find the resulting resistance.
69. An electric current of 0.5 A flows in the filament of an electric bulb for 8 min. What will be the amount of charge flows by electric current?
70. Assertion (A) Eddy current is produced in any metallic conductor when magnetic flux is changed around it.
Reason (R) Electric potential determine the flow of charge.
Reason (R) Electric potential determine the flow of charge.
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