Question

1) Four unequal resistors are connected in parallel with each other. Which of the following quantities must be equivalent through each resistor?

a.resistance
b.current
c.power
d.electric potential difference (voltage

2) The resistance of a superconductor is infinite once its temperature is below its critical temperature.

a.True
b. False

3)Alternating current ...

a.increases in magnitude.
b.decreases in magnitude.
c.changes direction.
d.answer choices a & b are both correct.
e.answer choices a, b, & c are all correct.

Answer 1

(1)

Four unequal resistors are connected in parallel with each other.

electric potential difference (voltage) must be equivalent through each resistor because voltage

across parallel resistors is equal whethere there resistance are same or different.

(2)

The resistance of a superconductor is infinite once its temperature is below its critical temperature.

FALSE.

Because superconductors have 0 resistance or infinite conductivity below critical temperature, thatwhy

they are called superconductors.

(3)

Alternating current changes its direction and increases its magnitude with time.

lt starts from zero and reaches to the maximum point. After reaching the maximum current, it starts

decreasing to zero