Question

Part II: Wheatstone Bridge

Procedure:

1)   Before connecting the circuit, use the multimeter as an ohmeter to verify the values of all the resistances. Use the voltmeter measure the terminal voltage of the battery. Use these measured values in all calculations.

            R₁ = 100 Ω

            R₂ = 200 Ω

            R₃ = 300 Ω

            R₄ = 200 Ω

            R₅ = 20 Ω

            ξ = 6 V

      Connect the circuit shown using the multimeter as the ammeter.

2)   Use a voltmeter to measure the potential difference across each resistor. Note which side of each resistor is at higher potential. Use this information to determine the direction of the current flowing in the resistor and mark all current directions in the circuit diagram. Also mark the current flowing through the ammeter.

Disconnect the battery but leave the rest of the circuit intact until you have completed the calculations below.

Analysis and discussion:

1)   Redraw the circuit diagram. Include the directions of all currents.

Answer 1

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