Free Printable Sab 1

1.

What is NOT true about zero resistance?

[2 min.]

a)

will result to maximum current

b)

will result to zero voltage

c)

equivalent to an open circuit

d)

same as a short circuit condition

2.

Semiconductor materials are used in _____ [1.5 min]

a)

preventing energy storage between conducting wires

b)

preventing an open circuit between the voltage source and the load

c)

conducting very large current easily

d)

storing very high voltages

e)

helping control the flow of electricity by behaving like a switch.

3.

If the _____ was measured as 101.5 MHz, its equivalent is ______ Hz.

[2 min.]

a)

source, $101.5\ x\ 10^6$

b)

voltage, $10.15\ x\ 10^6$

c)

power, $1.015\ x\ 10^6$

d)

frequency, $101.5\ x\ 10^6$

e)

None of these

4.

Materials that have high resistance so that current does not readily flow are ________.

[1 min.]

a)

insulators

b)

resistant

c)

semiconductors

d)

conductors

5.

You may decrease the current in a circuit by ____.

[3 min.]

a)

raising the source voltage

b)

decreasing the resistance in the circuit

c)

adding a parallel resistor to the existing resistance

d)

adding a series resistor to the existing resistance

6.

Suppose a battery-powered circuit has 15.00 Ω of net resistance, and 10.0 A of current flows through it. How much power is demanded from the battery?

[3 min.]

a)

225 W

b)

1.50 kW

c)

22.5 W

d)

66.7 mW

e)

It is impossible to calculate this, based on the information given.

7.

In a parallel circuit with unequal branch resistances, _________. [3 min.]

a)

all the resistances will have the same voltage.

b)

the highest resistance has the highest voltage

c)

the lowest resistance draws the lowest current

d)

all the resistances will have the same current.

8.

What is the approximate reading indicated by the pointer position if the function selector is set at 250 V AC ?

[5 min]

a)

2.5 A

b)

8.5 V

c)

220 V

d)

40 V

e)

None of these

9.

0.000252 A is equal to ___________.

[2 min.]

a)

520 microampere

b)

52 microampere

c)

52 milliampere

d)

252 milliampere

e)

None of these

10.

Three resistances of 10 ohm, 15 ohm, and 30 ohm are connected in series. The total resistance of the combination is ______________ . [2 min.]

a)

55/3 ohm

b)

less than 10 ohm

c)

30/3 ohm

d)

greater than 30 ohm

11.

An open circuit is where the current path is broken so that _________ . [2 min.]

a)

the voltage is at the lowest

b)

the current is maximum.

c)

current flows in a closed path across the source terminals

d)

current flows from the energy source to the load

e)

None of these

12.

When voltage sources are connected in series, _________ . [3 min.]

a)

the voltage will be the same in all parts of the circuit

b)

their individual voltages are added

c)

their individual currents are added

d)

the current will vary for every source

13.

The relationship among voltage, current, and resistance is expressed by _____ . [2 min.]

a)

electron charge principle

b)

conduction theory

c)

Watt’s law

d)

Ohm’s law

14.

Suppose the voltage from the source is 10 V and the load is 47 Ω. The power dissipated in the resistance is ______. Show your solution. [5 min.]

4 lines

15.

Which of the following quantities remain the same in all elements of a series circuit? [2 min.]

a)

Voltage

b)

Current

c)

Power

d)

Resistance

Sab 1

Total questions: 15

Worksheet time: 46mins

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