Finding the resistance of unknown resistor R

Answer: Option B

Answer : Option A

2016PPP1Q40 Solutions: Option C [There is another similar question in 2013 Nov Pure Physics P1Q40. The answer is Option C too. Refer to...

Solutions: As the fuel level drops, the float which stays on the fuel surface will descend. The rod which is attached to the float will...

Instead of P = IV to explain, it might be easier to explain using P = I^2R when the components are connected in series where current I is...

When two components are connected in series, where one is a fixed resistor and the resistance of the other can vary (e.g. thermistor,...

The ‘D.C.’ here mean direct current . It means that the current flows in one direction in the circuit . The direction of the direct...

Do you understand why there is a potential difference between P and Q? What if you are to find the potential difference between P and Q?...

Instead of the usual finding of potential difference across a component, in this question, you are required to find the p.d. across two...

This simple circuit involves a resistance wire on the meter rule and the use of jockey tapping at different length L on the resistance...