Electric Current and Circuits Quiz

What is the SI unit of electric current (i)?

• Coulomb (C)

• Volt (V)

• Ampere (A)

• Ohm (Ω)

In the formula i = dq/dt, what does 'dq' represent?

• Time

• Electric charge

• Voltage

• Resistance

What is the SI unit of the net charge 'dq'?

• Ampere (A)

• Coulomb (C)

• Volt (V)

• Tesla (T)

In the formula i = dq/dt, what is the SI unit of time 'dt'?

• Ampere (A)

• Volt (V)

• Second (s)

• Ohm (Ω)

What is the SI unit of current density (J)?

• Ampere (A)

• Ampere per square meter (A/m²)

• Volt (V)

• Ohm (Ω)

In the formula J = i / A, what does 'A' represent?

• Electric current

• Area

• Potential difference

• Time

What is the SI unit of the area 'A' in the equation for current density?

• Meter (m)

• Ampere (A)

• Square meter (m²)

• Volt (V)

What is the SI unit of resistance (R)?

• Ampere (A)

• Volt (V)

• Ohm (Ω)

• Tesla (T)

In the formula R = ρ * (L / A), what does ρ represent?

• Resistance

• Resistivity

• Electric current

• Time constant

What is the SI unit of resistivity (ρ)?

• Ohm meter (Ω·m)

• Ampere per square meter (A/m²)

• Coulomb (C)

• Tesla (T)