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5/45 MCQs for:

ELECTRICITY : Electric Current I

A toaster, an oven, and a microwave are all plugged into the same power strip. The power strip is connected to a single outlet. What is the total current drawn if the toaster is 1200W, the oven is 2000W, and the microwave is 1500W, all on a 120V circuit?

39.17 A.

4700 A.

2.55 A.

15.83 A.

The energy consumed by an electrical appliance is measured in:

Calories.

Kilowatt-hours (kWh).

Joules.

Watts.

Ohm's law states the relationship between:

Voltage and power.

Current, voltage, and resistance.

Resistance and time.

Current and power.

What is the unit of electrical energy commonly used for billing purposes in homes and industries?

Watt (W).

Joule (J).

Kilowatt-hour (kWh).

Volt-Ampere (VA).

What is the total resistance of two resistors with resistances R₁ and R₂ connected in series?

R₁ / R₂.

1/R₁ + 1/R₂.

R₁ + R₂.

R₁ × R₂.