A step up transformer ............... the current whereas a step down transformer ............... the current. 1. increases, increases 2. decreases, decreases 3. decreases, increases 4. increases, decreases

Question

KnowledgeBoat · Accepted Answer

decreases, increases Reason In a step up transformer the number of turns in the secondary coil is more than the number of turns in the primary coil ( N_s > N_p) i.e., turns ratio n > 1. It increases the a.c. voltage and decreases the current. i.e., E_s > E_p and I_s < I_p. In a step down transformer the number of turns in the secondary coil is less than the number of turns in the primary coil ( N_s N_p) i.e., turns ratio n 1. It decreases the a.c. voltage and increases the current. i.e., E_s E_p and I_s > I_p.

Physics

A step up transformer …………… the current whereas a step down transformer …………… the current.
increases, increases
decreases, decreases
decreases, increases
increases, decreases

Electro-Magnetism

Answer

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In a step up transformer:
N_s = N_p
N_s < N_p
N_s > N_p
nothing can be said

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Physics

A step up transformer …………… the current whereas a step down transformer …………… the current.increases, increasesdecreases, decreasesdecreases, increasesincreases, decreases