Question

6. P and Q are two square plates of copper having thesame thickness. The current is flowing through them,as shown. The side of Q is twice the side of P. Then :(a) the resistance of P is twice that of Q.(b) the resistance of P is half that of Q.(c) both have equal resistances.(d) the resistance of P is one-fourth that of Q.​

Answer 1

Answer:

Both will have equal resistance

Explanation:

As we know that the resistance of the conductor is given as

$R = \rho\frac{L}{A}$

here both plates are of same material and same thickness

so here we have

Area of crossection is given as

$A = (thickness)(Length)$

Resistance of P is given as

$R_p = \rho\frac{L}{tL}$

Resistance of Q is given as

$R_Q = \rho\frac{2L}{t(2L)}$

so from above equation we have

$R_p = R_Q$

#Learn

Topic : Resistance

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Answer 2

Answer:

Hope it helps

Explanation: