2 Parallel Circuits and Costs of Electricity

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit where the components are connected across common points or junctions, providing multiple paths for current to flow.

Front

What happens to total resistance when resistors are added in series?

Back

The total resistance increases as more resistors are added in series.

Front

In a parallel circuit, how does current behave across different branches?

Back

The total current is divided among the branches, and the current in each branch can vary depending on the resistance of that branch.

Front

What is the formula for calculating total resistance in a parallel circuit?

Back

The formula is 1/R_total = 1/R1 + 1/R2 + 1/R3 + ... for all resistors in parallel.

Front

What is the role of an ammeter in a circuit?

Back

An ammeter measures the current flowing through a circuit.

Front

If three ammeters are placed in a parallel circuit, which one will show the highest reading?

Back

The ammeter in the branch with the least resistance will show the highest reading.

Front

What is the significance of a switch in a circuit?

Back

A switch controls the flow of current in a circuit, allowing it to be turned on or off.

Front

How do you calculate the cost of running an electrical appliance?

Back

Cost = Power (in kW) x Time (in hours) x Cost per kWh.

Front

If an air conditioner uses 2200 watts, how many kilowatts is that?

Back

2200 watts is equal to 2.2 kilowatts (since 1 kW = 1000 watts).

Front

What is the cost to run a 2200 watt air conditioner for 5 hours at $0.12 per kWh?

Back

The cost is $1.32.