An ideal transformer supplies 100 kW of power to a 120 V circuit. If the input voltage is 10,000 V, what is the input current?
A. 1.20 mA
B. 10.0 A
C. 120 A
D. 240 A
E. 830 A
B. 10.0 A
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Slanting Surfaces With Friction: A block of mass m sits at rest on a rough inclined ramp that makes an angle ? with the horizontal. What must be true about force of static friction f on the block?
A. f > mg B. f > mg cos ? C. f > mg sin ? D. f = mg cos ? E. f = mg sin ?
A hot, molten body of different materials will become ________
Fill in the blank(s) with correct word
The inductive reactance of an inductor is higher at low frequencies
Indicate whether the statement is true or false
What aspect of the Sun's behavior wraps and distorts the solar magnetic field?
A) the differential spin between the equatorial and polar regions B) sunspot activity due to differential heat dispersion C) plasma fluxes within the core D) the cycle of the reversal of the magnetic poles