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What does Ohm’s Law describe?
The behavior of magnets
The relationship between voltage, current, and resistanc
The energy in a chemical reaction
Gravity and motion
What is the formula for Ohm’s Law?
I = VR
V = IR²
P = IV
V = IR
What does the symbol “V” represent in Ohm’s Law?
Vacuum
Volume
Velocity
Voltage
If V = 12V and R = 4Ω, what is the current (I)?
6A
3A
4A
2A
Resistance is measured in:
Volts
Watts
Amperes
Ohms
What happens to current if resistance increases and voltage stays the same?
Voltage increases
Current decreases
Nothing changes
Current increases
What unit is used for measuring current?
Amperes
Volts
Ohms
Watts
If a circuit has 10V and 2A, what is the resistance?
20 ohms
0.2 ohms
50 Ω
5 ohms
Who is Ohm’s Law named after?
Georg Simon Ohm
Albert Einstein
Thomas Edison
Isaac Newton
Which of these is NOT part of Ohm's Law?
Current
Voltage
Power
Resistance
What happens to the current if voltage doubles and resistance stays the same?
Current halves
Resistance doubles
Voltage stays constant
Current doubles
A wire with high resistance will allow:
More current to flow
No current to flow
Less current to flow
Unlimited current to flow
What does the symbol Ω stand for?
Volts
Watts
Ohms
Amps
If you increase resistance in a circuit but keep voltage the same, what will happen to current?
It will stay the same
It will increase
It will decrease
It will become infinite
Which equation is a rearranged form of Ohm's Law to find resistance?
R = V × I
R = VI
R = I / V
R = V / I
In the equation V = IR, what does “I” stand for?
Impedance
Current
Ion flow
Inductance
