A charge of $2 C$ $2 C$ passes through a circuit every $2 s$ $2 s$ . If the circuit can generate $7 W$ $7 W$ of power, what is the circuit's resistance?

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Answer 1 · 2018-01-17T13:59:57

Current( $I$ $I$ ) flowing through the circuit is $\frac{q}{t}$ $q/t$ i.e $(\frac{2}{2}) A$ $(2/2) A$ or $1 A$ $1 A$

If power is $7$ $7$ Watt,then from formula of power( $P = I^{2} r$ $P=I^2 r$ ) we can write,

$7 = 1 \cdot r$ $7 = 1*r$ (where r is the resistance of the circuit)

So, $r = 7 o h m$ $r= 7 ohm$

A charge of 2C2 C passes through a circuit every 2s2 s. If the circuit can generate 7W7 W of power, what is the circuit's resistance?