Answer to Question #294073 in Electric Circuits for Aliyy

Question #294073

1. A bulb drawn 0.4 A current from a 3 V battery in 6.5 minutes. Calculate the

(a) number of charge that flows in the circuit.

(b) resistance of the bulb filament.

(c) energy dissipated in the bulb.


1
Expert's answer
2022-02-07T15:21:23-0500

Part (a)

I=QtI=\frac{Q}{t}


0.4=Q60×6.50.4=\frac{Q}{60×6.5}

Q=156CQ=156C


Part (b)

V=IRV=IR

R=30.4=7.5ΩR=\frac{3}{0.4}=7.5\Omega


Part (c)

E=QVE=QV

=156×3=156×3

=468J=468J


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