Basic Electricity

Which of the following is the correct statement of Ohm's Law?

• When current increases in a circuit, voltage increases and resistsnce increases.

• When current increases in a voltage decreases and resistance increases.

• When current increases in a circuit, voltage increases while resistance remain constant.

• When current decreases in a circuit, voltage decreases and resistance increases.

According to Ohm's Law. across a resistor with constant resistance, what happens to the current across it when the voltage applied is halved?

• halved

• doubled

• quadrupled

• remains the same

It is the number of charges passing through a wire per unit time.

• current

• power

• resistance

• voltage

Tags

NGSS.HS-PS2-5

What type of energy transformation occurs in a battery-powered flashlight?

• Chemical to Electrical to Light

• Electrical to Chemical to Light

• Light to Chemical to Electrical

• Chemical to Light to Electrical

What is the unit of electrical resistance?

• Volt

• Ampere

• Ohm

• Watt

What is the SI unit of current?

• ampere (A)

• ohm (Ω)

• volt (V)

• watt (W)

It is the opposition to the flow of electric charges as they travel through a conducting wire

• circuit

• current

• resistance

• voltage

What is the SI unit of resistance?

• ampere (A)

• ohm (Ω)

• volt (V)

• watt (W)

It supplies energy in an electric circuit.

• load

• switch

• voltage source

• conducting wires

It converts electrical energy into different forms of energy such as light, heat, or sound in an electric circuit.

• load

• switch

• voltage source

• conducting wires