What we plant in the soil of contemplation we shall reap in the harvest of action.— Meister Eckhart

Current Electricity & Circuits

Kirchhoff's laws, RC circuits, bridges, instruments, EMF and internal resistance.

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Q1 · Current Electricity & Circuits · EASY
In the circuit shown, five identical resistors each of resistance R are connected. A potential difference V is applied across the terminals A and B. The current through the resistor connecting the midpoints of the two parallel branches is:
Q2 · Current Electricity & Circuits · EASY
In the circuit shown, five identical resistors each of resistance 2Ω are connected to form a balanced Wheatstone bridge with a 12V battery. The current through the galvanometer branch (the diagonal resistor) is:
Q3 · Current Electricity & Circuits · EASY
In the circuit shown, each resistor has resistance R. The equivalent resistance between points A and B is:
Q4 · Current Electricity & Circuits · EASY
In the circuit shown, five resistors each of resistance R are connected as shown. The equivalent resistance between points A and B is:
Q5 · Current Electricity & Circuits · EASY
In a Wheatstone bridge, resistances in the four arms are P = 4Ω, Q = 8Ω, R = 6Ω, and S = 12Ω. The bridge is: