1. In a solenoid electromagnet, there are a) only electric fields b) both electr

ID: 2276052 • Letter: 1

Question

1. In a solenoid electromagnet, there are

a) only electric fields

b) both electric fields and magnetic fields

c) only magnetic fields

d) either electric fields or magnetic fields but not both

2. Electric fields act on (can be more than 1 answer)

a) negatively charged things, like electrons

b) ucharged things, like neutrons

c) flowing charges, like electric currents

d) postively charged things, like protons

3. If you move a magnet back and forth inside a solenoid

a) force that moves the magnet does work and this energy is transfered into an electric field

b) there will be a magnetic power output by the solenoid

c) there won't be power output by the solenoid

d) there will be a electrical power output by the solenoid

4.When a magnet is getting close to a metal ring, it is _____ by the induced current.

a) not affected

b) depends on which end of magnet is closer to the metal ring

c) attracted

d) repelled

5. In electromagnetic waves,

a) only the electric field is oscillating

b) both the electric field and magnetic field are oscillating

c) sometimes the electric field is oscillating and sometimes the magnetic field is oscillating

d) only the magnetic field is oscillating

6.The volume around a moving electron has

a) neither an electric field nor a magnetic field

b) an electric field and a magnetic field

c) a magnetic field

d) a electric field

7. Metal is uncharged under normal conditions. It contains

a) negative charges only

b) both postive and negative charges

c) postive charges only

d) no charges

8. When a wave is going foward,

a) particles inside the wave go forward

b) some of the particles go foward while others go backward

c) energy of the wave goes foward

d) particles inside the wave go backward

9. A sound wave

a) cannot be represented by a sinusoidal graph

b) is transported by air

c) is a transverse wave

d) travels at a speed of 3x10^8 m/s

10. Seismic waves

a) are longitudinal waves

b) all travel at the same speed

c) are transverse waves

d) include p and s waves

Explanation / Answer

1. In a solenoid electromagnet, there are

a) only electric fields

b) both electric fields and magnetic fields

c) only magnetic fields

d) either electric fields or magnetic fields but not both

2. Electric fields act on (can be more than 1 answer)

a) negatively charged things, like electrons

b) ucharged things, like neutrons

c) flowing charges, like electric currents

d) postively charged things, like protons

3. If you move a magnet back and forth inside a solenoid

a) force that moves the magnet does work and this energy is transfered into an electric field

b) there will be a magnetic power output by the solenoid

c) there won't be power output by the solenoid

d) there will be a electrical power output by the solenoid

4.When a magnet is getting close to a metal ring, it is _____ by the induced current.

a) not affected

b) depends on which end of magnet is closer to the metal ring

c) attracted

d) repelled