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WorksheetsPhysics concepts Electricity 1
Total questions: 15
Worksheet time: 9mins
What is the device called that is connected in series with a component to measure the current that flows through it?
Ammeter
Voltmeter
Resistor
Capacitor
What is the unit of current?
Ampere (Amp)
Volt (V)
Ohm (Ω)
Watt (W)
A (a) is a material that allows electrical charge to flow easily
What is the unit of charge?
Coulomb
Newton
Joule
Watt
The sum of the currents entering a junction must always equal the sum of the currents leaving it, due to the conservation of charge.
True
False
A component that only allows current to flow through in the forward direction, with very large resistances in the reverse direction.
Diode
Resistor
Capacitor
Inductor
Fill in the blank: The green and yellow striped safety wire connected to metal casings, preventing an appliance from becoming live, is called the _________.
Earth Wire
Live Wire
Neutral Wire
Fuse Wire
The rate of flow of electrical charge is called _________.
Electric Current
Electric Potential
Magnetic Field
Resistance
What causes electrical heating in a metal?
collisions between electrons and ions
collisions between protons and ions
the metal melting
nobody knows, it just happens
What are the negatively charged particles that flow when a metal conducts electricity?
Electrons
Protons
Neutrons
Ions
A (a) is a safety device consisting of a thin metal filament that melts and cuts off the power supply if there is a surge in current?
What do you call a material that doesn’t allow electrical charge to flow?
Insulator
Conductor
Semiconductor
Electrolyte
A fuse must always be connected to the (a) wire.
What is an l.e.d.?
a light emitting diode
a low energy diode
a large electrical device
which of these is not a type of wire in a plug
live
dead
neutral
earth
