General Physics 2 - Current, Resistance, and Voltage

Front

What is the formula for current (I)?

Back

I = q / t, where I is current, q is charge, and t is time.

Front

What is the unit of current?

Back

The unit of current is the ampere (A), which is equivalent to coulomb per second (C/S).

Front

What is the difference between conventional current and electron flow?

Back

Conventional current assumes flow from positive to negative, while electron flow is from negative to positive.

Front

What is Direct Current (DC)?

Back

DC is a type of current that flows in one direction.

Front

What is Alternating Current (AC)?

Back

AC is a type of current that changes direction periodically.

Front

How do you calculate charge (Q) if you know current (I) and time (t)?

Back

Q = I · t.

Front

What is the formula for resistance (R)?

Back

R = V / I, where V is voltage and I is current.

Front

What is the unit of resistance?

Back

The unit of resistance is the ohm (Ω).

Front

What factors affect resistance?

Back

Length of conductor, cross-sectional area, and resistivity of the material.

Front

What is resistivity?

Back

Resistivity represents the ability of a material to oppose the motion of charge carriers.