Ohm's Law and Series and Parallel Circuits

 Ohm's Law and Series and Parallel Circuits

Solve:

1. Calculate the intensity of the current that powers a toy washing machine that has a resistance of 10ῼ and runs on a battery with a potential difference of 30 V.

2. Calculate the voltage, between two points in the circuit of an iron, through which a current of 4 A passes and has a resistance of 10ῼ.

3. Calculate the resistance through a current of 5 A and a difference in potential of 11 V.

4. An electric toaster has a resistance of 40ῼ when it is hot. What will be the intensity of the current that will flow when connecting it to a 120V line?

5. In an electrical circuit the voltage is 230 V and the resistance value is 100ῼ. Determine the current flowing through the circuit.

6. A series circuit has a voltage of 80 V and three resistors of 30ῼ, 10ῼ and 40ῼ. Find the total (equivalent) resistance, total current, and voltage across each resistor.

7. See parallel circuit diagram below: A parallel circuit has a voltage of 27 V and two resistors: one of 9 ῼ and the other of 18 ῼ. Calculate the total resistance, the total current and the current through each of the resistors.

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8. A parallel circuit has a voltage of 100 V and three resistors of 50ῼ, 20ῼ, and 10 ῼ. Calculate the equivalent resistance of the parallel circuit and the current through each resistor.