Science MCQs

ELCB is Earth Leakage Circuit Breaker.

Conventional current is defined as flow from positive to negative.

In a series circuit, a break stops current for all components.

In a parallel circuit, other paths remain functional.

Adding bulbs increases total resistance, reducing current and brightness.

Adding parallel paths gives current more ways to flow, reducing total resistance.

Longer and thinner wires have higher resistance.

According to Ohm's Law (I=V/R), current increases with voltage.

Low resistance ensures the ammeter doesn't significantly affect the current it's measuring.

High resistance ensures the voltmeter draws minimal current and doesn't affect the circuit.