a) In Ohm\'s law, V = IR, V represents: 1) Electric potential at the end of the

Question

a)In Ohm's law, V = IR, V represents:

1)      Electric potential at the end of the resistor where current I enters into the resistor.

2)      Electric potential at the end of the resistor where current I leaves the resistor.

3)      Electric potential at the center of the resistor where current experiences the resistance.

4)      The difference in electrical potential between the two ends of the resistor.

5)      The potential difference between the terminals of a battery in the circuit containing the resistor.

b)     Fill in the blanks to correctly complete the statements below:

1) If two 100 kW resistors are connected in series, the equivalent resistance is ___________.

            2) If two 100 kW resistors are connected in parallel, the equivalent resistance is __________.

      3) The internal resistance of an ideal voltmeter is _____________ (zero, infinite).

            4) The internal resistance of an ideal ammeter is _____________ (zero, infinite).

            5) The color code uses __________ color bands to indicate the value of the resistance of a resistor. (how many)

An ohmmeter reads 35.6 kW on its 200 kW range scale for the resistance of a given resistor. The uncertainty in the reading for this range is specified as 0.2% of the reading + 1 digit. What is the uncertainty in the resistance value? Show your calculations below.

What is the resistance across the two ends of the resistor network shown below? If a 10 V battery is connected across the two ends (at A and B), what current will flow through each resistor?

Show your calculations and write down the current values next to each resistor in the figure.

In Ohm's law, V = IR, V represents: Electric potential at the end of the resistor where current I enters into the resistor. Electric potential at the end of the resistor where current I leaves the resistor. Electric potential at the center of the resistor where current experiences the resistance. The difference in electrical potential between the two ends of the resistor. The potential difference between the terminals of a battery in the circuit containing the resistor. Fill in the blanks to correctly complete the statements below: If two 100 kW resistors are connected in series, the equivalent resistance is ___________. If two 100 kW resistors are connected in parallel, the equivalent resistance is __________. The internal resistance of an ideal voltmeter is _____________ (zero, infinite). The internal resistance of an ideal ammeter is _____________ (zero, infinite). The color code uses __________ color bands to indicate the value of the resistance of a resistor. (how many) An ohmmeter reads 35.6 kW on its 200 kW range scale for the resistance of a given resistor. The uncertainty in the reading for this range is specified as 0.2% of the reading + 1 digit. What is the uncertainty in the resistance value? Show your calculations below. What is the resistance across the two ends of the resistor network shown below? If a 10 V battery is connected across the two ends (at A and B), what current will flow through each resistor? Show your calculations and write down the current values next to each resistor in the figure.

Explanation / Answer

(a)

4)The difference in electrical potential between the two ends of the resistor.

(b)

1. 200 kW

2. 50 kW

3. infinite

4. zero

5. three

Req = 200 O

current through the 100 O resistor = 50mA

current through each 200 O resistor = half the total current = 25 mA

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