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Electric Current(I)

When starter ...

Question

When starter motor of a car is switched on for 0.8 s, a charge 24 C passes through the coil of the motor. Calculate the current in the coil.

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Solution

Current (I) = $\frac{q}{t}$

Charge (q)

time (t)

I = $\frac{24}{0.8}$ = 30 A

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When starter of a car is switched on for 0.8s, 24C of charge passes through the coil of the motor. Calculate the current in the motor

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An electric motor is a device to convert electrical energy into mechanical energy. The motor shown below has a rectangular coil

(15 c m \times 10 c m)

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B = 2.5 T

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Q. Question 2
The phenomenon of electromagnetic induction is
(a) the process of charging a body.
(b) the process of generating magnetic field due to a current passing through a coil.
(c) producing induced current in a coil due to relative motion between a magnet and the coil.
(d) the process of rotating a coil of an electric motor.

The phenomenon of electromagnetic induction is

(a) the process of charging a body

(b) the process of generating magnetic field due to a current passing through a coil

(c) producing induced current in a coil due to relative motion between a magnet and the coil

(d) the process of rotating a coil of an electric motor

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