Because tvs require more voltage than is found in normal household current, what is built into them? a induction batteries b step-up transformers c step-down transformers d secondary generators

The answer is B. Step-up transformers increase the voltage of an electric power line but reduce the current. This is because the power of the electricity remains the same but voltage and current can be changed in accordance with the following formulae:

P = IV where:

P = power

I = current

V = voltage

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

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