WebSep 25, 2024 · Ans. Electric current has the following effect : (i) Electric current can give rise to heating and lighting. (ii) Electric current can convert a straight conductor into a temporary magnet. Q.6.When the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. WebOct 13, 2024 · Welcome to yet another episode of the BYJU’S Champions series. In this episode, we will be discussing Electric Current and Its Effects Class 7 Science (Physics) …
MCQ Questions for Class 7 Science Chapter 14 Electric Current …
Webmagnitude of the electric force acting on each charge? Solution: For the electric force to be minimum, the magnitude of charge on the particles must be minimum. Magnitude of charges, q 1 = q 2 = 1.6x1019 C Distance between the charged particles, r = 1 cm = 0.01 m y oulomb’s law, using equation (A) F e = [9x109x1.6x10-19x1.6x1019]/(0.01)2 WebDomestic electric circuits Livewire has a voltage of 220 V and is covered wi th red insulation. Ear th wire has a voltage of 0 V (same as Ear th) and is covered wi th green insulation. The neutral wire has black insulation. In our houses, we receive AC electric power of 220 V wi th a frequency of 50 Hz. Domestic electric circuit how many years has michael jordan played
Electric Current and Its Effects In One Shot - Class 7
WebJun 7, 2024 · (a) The electric iron works on the basis of heating effect of electric current. (b) The values showed by Pinki here is a great concern and love towards her own 4 years old daughter. Question 2. Explain with the help of a diagram, how does the magnetic effect of electric current help in the working of an electric bell. Answer: WebThe Heating Effect of Electric Current. When an electric current passes through a wire the wire gets heated up. This is known as the heating effect of electric current. The heat that is produced in the wire depends upon the following factors: the material of the wire. the length of the wire. the thickness of the wire. Web(b) One of the most common applications of chemical effect of electric current is _____. (c) Small amount of a mineral salt present naturally in water makes it a_____ of electricity. (d) Electroplating of _____ is done on objects like water taps and cycle bell to give them a shiny appearance. Soln: (a) Cathode how many years has nfl been around