1) Dots represent the magnetic field ______________________ a) moving into the page b) moving parallel to the current c) moving out of the page 2) Crosses represent the magnetic field ______________________ a) moving into the page b) moving parallel to the current c) moving out of the page 3) A solenoid is a/an ______________________________ a) permanent magnet b) temporary magnet c) massive magnet d) coils of wire with current that produces a magnetic field e) electric motor f) generator 4) Magnetic field is represented by the letter _________ and has the unit ____________ a) (B) Volts/m (V/m) b) (M) Tesla (T) c) (M) Volts/m (V/m) d) (Mg) Volts/m (V/m) e) (B) Tesla (T) f) (Mg) Volts/Coulomb (V/C) 5) To find the current in an electromagnet indicate which property is not required. a) Magnetic field b) Length of the wire c) Angle of magnetic field to the current d) Gravitational field e) Distance of the wire from the fields f) None of the listed 6) What does (q) represent in F = qE F = qE What does q represent? a) Electric field b) Charge c) Force on conductor d) Length of the conductor e) Magnetic field f) Angle 7) Which formula shows the correct arrangement for calculating ACCELERATION (F = ma) a) a = F/m b) a = m/F c) a = F x m 8) Identify the unit used when E = V/d a) Volts/Coulomb V/C b) Volts/metre V/m c) velocity /second m/s/s d) velocity/Coulomb m/s/C e) Volts/kilometre V/km 9) Calculate the electric field when the voltage is 200V and the distance between the plates is 2m a) 1000 V/m b) 10 V/m c) 1 V/m d) 100 V/m 10) Calculate the electric field when the voltage is 300V and the distance between the plates is 0.2m a) 1500 V/m b) 150 V/m c) 15 V/m d) 1.5 V/m e) 0.0150 V/m f) 115 V/m 11) Calculate the electric field when the voltage is 120V and the distance between the plates is 3mm a) 40 V/m b) 400 V/m c) 4.4 V/m d) 4 V/m e) 40 000 V/m f) 115 V/m 12) A motor lifts a mass of 400g. The motor has 200 turns in  0.3T magnetic field. If the radius is 0.142m A motor lifts a mass of 400g. The motor has 200 turns in 0.3T magnetic field. Determine the force required to lift the mass. F = mg  a) 39.20 N b) 3920 N c) 60 N d) 3.92 N 13) F = BIL Sin Ꝋ What does (I) represent? a) Magnetic field b) Length of wire c) Current d) Force in newtons e) Angle between the current and magnetic field 14) Calculate the force F = BIL Given the magnetic field is 2T, the current is 3A and the length of the wire is 4m a) 2.4 N b) 40 N c) 24 N d) 32 N e) 3.2 N f) 320 N 15) F = BIL Sin Ꝋ What does (L) represent? a) Magnetic field b) Length of wire c) Current d) Force in newtons e) Angle between the current and magnetic field 16) What does (n) represent in the following formula Torque = n x B x A Sin Ꝋ a) Magnetic field b) Area c) Number of coil loops d) Angle e) Distance 17) What does (A) represent in the following formula Torque = n x B x A Sin Ꝋ a) Magnetic field b) Area c) Number of coil loops d) Angle e) Distance 18) What does (v) represent in the following formula F = qvB Sin Ꝋ a) Voltage b) Potential difference c) Magnetic field d) Electric field e) Force f) velocity 19) If Ꝋ is 90 then then Sin 90 will equal F = qvB Sin Ꝋ a) 1 b) 2 c) 3 d) 4 e) 5 f) 0 20) A wire carries 2A within a field that is 4T. Identify the magnetic field. a) 2A b) 4T c) None of the listed 21) Convert 23 kV to SI units a) 23 kV b) 23 000 V c) 2.3 V d) 2.3 x 10 2 V 22) The magnetic force is maximum when an electron is moving ______________ to the magnetic field a) Parallel b) In line c) Adjacent d) Perpendicular 23) The magnetic force is ZERO when an electron is moving ______________ to the magnetic field a) Parallel b) In line c) Adjacent d) Perpendicular 24) A proton often moves to the ____________ plate a) Neutral b) Positive c) Negative  25) Induced EMF occurs when there is a) No movement in a magnetic field b) there is movement in a magnetic field 26) 2nC represents a) 2 x 10 -6 C b) 2 x 10 -3 C c) 2 x 10 -9 C d) 2 x 10 -10 C 27) 5mC represents a) 5 x 10 -6 C b) 5 x 10 -3 C c) 5 x 10 -9 C d) 5 x 10 -10 C 28) Give the name of the rule used to determine the direction of the force, current and magnetic field a) Right hand rule b) Electric field rule c) Magnetic rule 29) Give the charge on an electron. a) -1.602 x 10 -19 C b) 1.67 x 10 -27  C c) 1.602 x 10 -19 C d) - 2.67 x 10 -27 C 30) E = V/d Rearrange the formula to find the voltage given the electric field is 2000 V/m and the distance between the plates is 3m a) 60 V b) 600 V c) 6000 V d) 2000 V e) 20 V f) 200 V

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