Equivalent Resistance of Resistors in Parallel

What is the first step in setting up the metre bridge experiment?

• Connect the positive terminal of the battery to terminal A of the metre bridge.

• Connect the galvanometer to the metre bridge.

• Measure the balancing length from end A.

• Insert the key into the circuit.

Which component is connected to the central terminal of the metre bridge?

• The jockey

• The negative terminal of the battery

• The positive terminal of the galvanometer

• The resistance box

What is the balancing length measured for resistance wire r1?

• 42.6 cm

• 55.5 cm

• 50 cm

• 60 cm

How is the resistance wire r2 connected in the experiment?

• In series with the galvanometer

• In parallel with the resistance box

• Between the terminals of the right gap of the metre bridge

• Between the terminals of the left gap of the metre bridge

What is the balancing length when r1 and r2 are connected in parallel?

• 55.5 cm

• 50 cm

• 60 cm

• 42.6 cm