Is the transformer a step-up or a step-down transformer

Assignment Help Physics

Reference no: EM13647349

The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. There fore, atransformer is plugged into the wall socket and produces the necessary voltage for charging the batteries.

a) Is the transformer a step-up or a step-down transformer? Explain.
b) Is the current that goes through the batteries greater than,equal to, or smaller than the current coming from the wall socket?Explain.
c) If the transformer has a negligible resistance, is theelectrical power delivered to the batteries greater than, equal to,or less than the power coming from the wall socket? Explain.
d) The batteries of a laptop computer are rates at 9.0 V, and acurrent of 225 mA is used to charge them. The wall socket providesa voltage of 120 V. Determine the turns ratio of thetransformer.
e) What is the current coming from the wall socket?
f) Find the power delivered by the wall socket and the power sentto the batteries.

Reference no: EM13647349

Questions Cloud

Evaluate the mass of co2 produced per kj heat emitted : Calculate the heat produced by combustion per liter of methanol. Methanol has a density of 0.791 g/mL. (d) Calculate the mass of CO2 produced per kj heat emitted

Dielectric constant k of material between circular plates : Two capacitors have the same plate separation but one has squareplates and the other has circular plates. The square plates are alength L on each side and the diameter of the circular plate is l.

Evaluate the entropy change of the transition : The enthalpy of the graphite -----> diamond phase transition, which under 100 kbar occurs at 2000K, is +1.9 KJ/mol. Calculate the entropy change of the transition.

Explain the products are sodium phosphate and water : Write balanced (a) molecular, (b) overall ionic, and (c) net ionic equations for the reaction between an aqueous solution of phosphoric acid, H3PO4(aq), and an aqueous solution of sodium hydroxide. The products are sodium phosphate and water.

Is the transformer a step-up or a step-down transformer : The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. There fore, atransformer is plugged into the wall socket and produces the necessary voltage for charging the batteries.

The single discipline of anthropology : 1) The subfields of anthropology seem quite diverse in their specific subjects and methods. Why, then, are they all considered parts of the single discipline of anthropology? What ties them together?

Explain the average mass percent of saccharin : They were oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride solution. The mass of BaSO4 obtained was 0.5032g. What is the average mass percent of saccharin in the tablets

Evaluate by how much does the spring stretch : A car is hauling a 89-kg trailer, to whichit is connected by a spring. By how much does the spring stretch

Research the seven organizational approaches : Research the seven organizational approaches to studying the human body and how and when they are used in health care.

User Account

All Pages