List the three ways that an emf can be induced in a loop of wire

What will be an ideal response?


1. by changing the magnetic field
2. by changing the area of the loop in the field
3. by changing the loop's orientation with respect to the field

Physics & Space Science

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Standing Waves on a String: A string of linear density 1.5 g/m is under a tension of 20 N. What should be its length if its fundamental resonance frequency is 220 Hz?

A. 0.26 m B. 0.96 m C. 1.1 m D. 1.2 m

Physics & Space Science

Polaris is 10 times larger than Capella A and both are the same color. How much brighter or dimmer is Polaris to Capella?



a.  10× brighter
b.  10× dimmer
c.  100× brighter
d.  100× dimmer

Physics & Space Science

The hottest part of the Sun is

A. the corona. B. the core. C. the photosphere. D. the radiative zone.

Physics & Space Science

What is the formula of a compound formed from the ions M1+ and X3-?

a. M3X b. MX3 c. MX d. None of these

Physics & Space Science