Physics The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ? 0.41666666666667 8.5 A 24 A 0.41666666666667 8.5 A 24 A ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: The heating effect of current alone Intense sunlight at noon Hysteresis loss alone Both the heating effect of current and hysteresis loss The heating effect of current alone Intense sunlight at noon Hysteresis loss alone Both the heating effect of current and hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Physics A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If rg and ra are respectively the electrical resistivities of gold and aluminium, then which one of the following relations is correct? C2>C1 C1>C2 C1 = C2 C1pa = C2pg C2>C1 C1>C2 C1 = C2 C1pa = C2pg ANSWER DOWNLOAD EXAMIANS APP
Physics The washing machine works on the principle of Reverse osmosis Centrifugation Diffusion Dialysis Reverse osmosis Centrifugation Diffusion Dialysis ANSWER DOWNLOAD EXAMIANS APP
Physics The working of the quartz crystal in the watch is based on the Piezo - electric Effect Edison Effect Photoelectric Effect Johnson Effect Piezo - electric Effect Edison Effect Photoelectric Effect Johnson Effect ANSWER DOWNLOAD EXAMIANS APP
Physics The sound produced by a bat is– Ultrasonic Subsonic Audible Infrasonic Ultrasonic Subsonic Audible Infrasonic ANSWER DOWNLOAD EXAMIANS APP
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