Mock Science Olympiad: Circuits Questions

What is Ohm's Law?

• v=IR

• I=VR

• R=V/I

• V=V/R

What is the unit for voltage?

• Ohms

• Volts

• Amperes

• Watts

What is the unit for resistance?

• Volts

• Amperes

• Ohms

• Watts

Which of these is not a component inside an atom?

• proton

• neutrom

• electron

• neutron

Tags

NGSS.HS-PS1-8

Which of these have low resistance?

• plastic

• rubber

• copper

• glass

What is the difference between AC and DC current?

• AC current flows in a constant direction.

• AC current regularly changes direction.

• AC current has more power lost to heat during transmission.

• Batteries are generally AC.

Which of these in the water analogy is closest to amperage?

• Water pressure

• Water flow

• Water pipe

• Water pump

What is a short circuit?

• A dangerously short wire.

• A fire started by electricity.

• A circuit path that has zero or little resistance.

• A wire that has been partially stripped and emits electric sparks.

If there are 10 Volts across a 5 Ohm resistor, what is the current?

• 0.5 Amps

• 2 Amps

• 15 Amps

• 1 Amp

If there are 40 Volts and 5 Amps running through an electrical circuit, what is the resistance of the circuit?

• 8 Ohms

• 6 Ohms

• 200 Ohms

• 45 Ohms