Question

Which physical quantity remains constant when resistances are connected in parallel?

Answer 1

Hyy...
Here is ur answer....

Potential difference (voltage) remains constant when resistances are connected in parallel.

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Answer 2

HELLO THERE!

When two resistances are connected in parallel, the Potential difference (P.D.) remains constant.

Consider two resistors, A and B are connected in parallel. When a battery of P.D = x Volts is connected, a current I flows through the circuit, which gets divided and flows through the two separate channels to each resistors A and B. Let their resistances be a and b.

Hence, P.D across A:

V = IR,

so:

$PD_{A} = I\times a$

Similarly, P.D across B:

$PD_{B} = I\times b$

Experimentally, it is found that:

$PD_{A} = PD_{B}$

Hence, Potential Difference across the two resistors connected in parallel remain constant.

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