Resistance: Quiz

Description

This quiz test knowledge of the topics covered in the mind map of resistance, and the notes and flash cards on resistance & resistivity, conduction in different materials, circuit devices, and calculations involving electric circuits.
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Quiz by tatemae.honne, updated more than 1 year ago More Less
alex.examtime9373
Created by alex.examtime9373 about 10 years ago
tatemae.honne
Copied by tatemae.honne about 10 years ago
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Resource summary

Question 1

Question
What is the formula for resistance?
Answer
  • Voltage/ Current
  • Current x voltage
  • Voltage x resistivity
  • Voltage/ charge

Question 2

Question
This symbol signifies which of the following device?
Answer
  • Ohmeter
  • Ammeter
  • Fixed resistor
  • Variable resistor
  • Potentiometer

Question 3

Question
Which of the following can be used to measure resistance?
Answer
  • Ohmeter
  • Voltmeter & ammeter
  • Potential divider
  • Resistor
  • Wheatstone bridge

Question 4

Question
Calculate the resistance of a metal wire when a voltage of 8 V across it causes a current of 2 A to flow through it.
Answer
  • 4 ohms
  • 16 ohms
  • 0.25 ohms

Question 5

Question
What formula do you use for calculating resistors in parallel?
Answer
  • R = R₁ + R₂
  • 1/R = 1/R₁ + 1/R₂
  • V = V₁ + V₂
  • R₁/R₂ = R₃/R₄

Question 6

Question
What is the function of a resistor?
Answer
  • Convert electrical potential energy to some other form of energy
  • Measure resistance
  • Split the voltage of a circuit

Question 7

Question
Calculate the total resistance in a circuit with two resistors in series. The first resistor has a resistance of 60 ohms, and the second one has a resistance of 30 ohms
Answer
  • 90 ohms
  • 1/90 ohms
  • 20 ohms
  • 1/20 ohms

Question 8

Question
What is the unit of resistivity?
Answer
  • Ohm
  • Ampere
  • Ohm metre
  • Ohm/ metre

Question 9

Question
Which of the following is inversely proportional to resistivity?
Answer
  • Area
  • Length
  • Resistance
  • Current

Question 10

Question
What are the charge carriers in an ionic solution?
Answer
  • Electrons
  • Ions
  • Electrodes
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