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Electric Circuits

Resistors R₁ and R₂ connected in series, and

• Resistor R₃ connected in parallel with R₂.

If R₁ = 4 kΩ, R₂ = 4.5 kΩ, and R₃ = 12 kΩ.

4.1.1 draw the circuit diagram. (5)

4.1.2 calculate the voltage across R₃ if the applied voltage is 12V. (8)

4.1.3 calculate the current passing R1 and R3.

Electric Circuits

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Electric Circuits

Calculate The total current of 12 voltage and 4 ohms connected in parallel

Electric Circuits

Calculate the total resistance of 12 voltage and 4 ohms connected in parallel

Electric Circuits

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Electric Circuits

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Electric Circuits

The temperature coefficient of copper is 0.00427/°C. The resistance of the coil is 8.82 ohms

at 24°.C. Determine its resistance at 0°.C and 42°.C.

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What potential difference must be applied to cause a current of 2.5 A in a circuit to have a resistance of 53 ohms?

Electric Circuits

2 meter of resistance wire of Cross section .5mm² has a resistance of 2.2ohm c calculate the resistivity of the meter

Electric Circuits

The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in

diameter is 0.830 ohms at

20° C. What is the resistivity of the copper at this temperature?