1. An electron, initially moving in the +x-direction enters a uniform magnetic field in the +y-direction....

1. An electron, initially moving in the +x-direction enters a uniform magnetic field in the +y-direction. What is the direction of the initial magnetic force on the electron?

		None of the choices is correct.
		between +x and +y-directions
		+z-direction
		between +x and –y-directions
		–z-direction

2.

A small light source radiates light uniformly in all directions at a rate of 10 W. What is the light intensity at a distance of 2 m from the source?

		0.4 W/m²
		0.8 W/m²
		0.2 W/m²
		0.6 W/m²
		0.5 W/m²

Expert Solution

genius_generous answered 2 years ago

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