Ohm's Law

Which of the following is essential for a complete electrical circuit?

• A source of power, a path, a load, and a switch.

• Only a source of power and a load.

• A path and a switch only.

• A generator and a battery.

What is the primary function of a switch in a circuit?

• To increase the voltage.

• To consume the electric current.

• To provide a path for the current.

• To control or cut off the flow of current.

In which type of circuit are components wired one after another in a single path?

• Parallel circuit

• Series circuit

• Open circuit

• Short circuit

What happens in a series circuit if one of the light bulbs burns out?

• The other bulbs become brighter.

• All the other bulbs will go out.

• The other bulbs remain lit.

• The current finds another path.

Which type of circuit provides a separate path for the current to flow through each component?

• Series circuit

• Parallel circuit

• Closed circuit

• Simple circuit

Ohm's Law describes the relationship between which three electrical quantities?

• Voltage, Current, and Power

• Resistance, Power, and Voltage

• Voltage, Current, and Resistance

• Power, Energy, and Time

What is the unit of measurement for electric current?

• Volt (V)

• Ohm (Ω)

• Watt (W)

• Ampere (A)

"The opposition a material offers to the flow of current" is the definition of:

• Voltage

• Current

• Resistance

• Power

According to Ohm's Law, what is the relationship between current and voltage?

• Current is inversely proportional to voltage.

• Current is directly proportional to voltage.

• Current is equal to voltage.

• There is no relationship between them.

If the voltage in a circuit increases while the resistance stays the same, what will happen to the current?

• It will decrease.

• It will stay the same.

• It will increase.

• It will stop flowing.