P3 Net resistance
Quiz by John Farrant
GCSE (OCR)
Science A, Combined (9-1)(ARCHIVED)
English National Curriculum
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8 questions
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- Q1What does net resistance mean?For all the components in a circuit - it’s the one that has the highest resistance.The overall resistance of just the resistors in a circuit.The overall resistance which you get by adding together the resistances of all the components in a circuit.The total resistance of all the components based on their series and parallel configurations.30sP3.2i
- Q2A 5 ohm resistor is placed in PARALLEL with a 10 ohm resistor. What is the net resistance?50 ohms7.5 ohmsLower than 5 ohms.15 ohms30sP3.2i
- Q3A 5 ohm resistor is placed in SERIES with a 10 ohm resistor. What is the net resistance?Lower than 5 ohms.15 ohms7.5 ohms50 ohms30sP3.2i
- Q4A 3 ohm resistor is placed in PARALLEL with a 2 ohm resistor. What is the net resistance?2.5 ohmsLower than 2 ohms.5 ohms6 ohms30sP3.2i
- Q5A 3 ohm resistor is placed in SERIES with a 2 ohm resistor. What is the net resistance?Lower than 2 ohms.2.5 ohms5 ohms6 ohms30sP3.2i
- Q6What quantity is measured in coulombs?chargeresistancepotential differencecurrent30sP3.1a
- Q7What is the equation for resistance?resistance = voltage x currentresistance = current ÷ voltageresistance = voltage ÷ currentresistance = current x time30sPM3.2i
- Q8If you had a series circuit with a LDR and a bulb, and the light intensity increased, what would happen to the brightness of the bulb?Don't know!The bulb's brightness stays the same.The bulb becomes brighter.The bulb becomes dimmer.30sP3.2i