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Senior High School: 11th and 12th Grade
Physics
Electricity - Electrical Circuits 2
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Q.1
How is the current of a resistor related to the potential difference across it?
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Inversely proportional
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Directly proportional
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Equal
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One-fifth of the potential difference
Q.2
An LED emits light when the current flows through it in which direction?
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Forwards
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Backwards
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No current flow
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Up and down
Q.3
If two resistors are connected in parallel in a circuit, which has a total electrical potential difference of five volts, what is the value of the electrical potential difference across each resistor?
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2.5 V
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1.25 V
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5 V
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10 V
Q.4
Which equation correctly relates voltage, resistance and current?
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R = I⁄V
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V= I⁄R
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I = R⁄V
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V = I R
Q.5
If a 100 ohm resistor is replaced with a 200 ohm resistor, whilst the potential difference is kept constant, what happens to the current?
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Stays the same
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Increases
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Decreases
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There is not enough information
Q.6
The current through a component depends on which of the following?
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The resistance of the component
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The size of the component
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The material of the component
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The color of the component
Q.7
If three 1.5V cells are connected in series, what is the total potential difference provided by the cells?
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3 V
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4.5 V
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5.5 V
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1.5 V
Q.8
What is the unit of resistance?
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Ohm
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Volt
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Ampere
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Coulomb
Q.9
If two five ohm resistors are connected in series, what is the total resistance of the circuit?
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5 ohms
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10 ohms
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2.5 ohms
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7.5 ohms
Q.10
What can be found by measuring current and voltage?
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Resistivity
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Resistance
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The direction of true north
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Magnetic field strength
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