An ohmmeter is connected across an inductor and the pointer indicates an infinite value. The inductor is (a) good (b) open (c) shorted (d) resistive

An inductor and a resistor are in series with a sinusoidal voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then (a) $V_R>V_L$ (b) $V_L<V_R$ (c) $V_L=V_R$ (d) $V_L>V_R$

Five inductors are connected in series. The lowest value is $5 \mu \mathrm{H}$. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, what is the total inductance?

If $L_3$ opens, the voltage across $L_2$ (a) increases (b) decreases (c) stays the same

A sinusoidal voltage is applied across an inductor. When the frequency of the voltage is increased, the current (a) decreases (b) increases (c) does not change (d) momentarily goes to zero

A student wraps 100 turns of wire on a pencil that is $7 \mathrm{~mm}$ in diameter as shown in Figure 43. The pencil is a nonmagnetic core so has the same permeability as a vacuum $\left(4 \pi \times 10^{-6} \mathrm{H} / \mathrm{m}\right)$. Determine the inductance of the coil that is formed.

The switch is in position 1 . When it is thrown into position 2 , the inductance between $A$ and $B$ (a) increases (b) decreases (c) stays the same

Convert the following to millihenries: (a) $1 \mathrm{H}$ (b) $250 \mu \mathrm{H}$ (c) $10 \mu \mathrm{H}$ (d) $0.0005 \mathrm{H}$

An inductance of $0.05 \mu \mathrm{H}$ is larger than (a) $0.0000005 \mathrm{H}$ (b) $0.000005 \mathrm{H}$ (c) $0.000000008 \mathrm{H}$ (d) $0.00005 \mathrm{mH}$

What are the two major mechanisms for the repair of double-strand breaks? How do they differ?

When you write a decimal as a percent, do you move the decimal point two places to the left or to the right?

Indicate whether the statement below are TRUE or FALSE according to the passage.
___________ Emily Geiger probably had a very good memory.

The Bohr model only works for one electron species. Why do we discuss it in this text (what’s good about it)?

A firm is a natural monopoly if ________. A. it can produce the good at a price below its competitor’s price B. it can produce a larger quantity of the good than other firms could C. the government grants it a public franchise or patent D. it can satisfy the market demand at a lower average total cost than other firms can