Chapter 4: Electricity: Magnetic and Heating Effects - Solutions

VIGYAN
Chapter 4: Electricity: Magnetic and Heating Effects - Solutions
Electricity: Magnetic and Heating Effects - Solutions Chapter 4: Electricity: Magnetic and Heating Effects - Solutions Question 1 Fill in the blanks: (i) The solution used in a Voltaic cell is called electrolyte. (ii) A current carrying coil behaves like a magnet. Question 2 Choose the correct option: (i) Dry cells are less portable compared to Voltaic cells. (False) (ii) A coil becomes an electromagnet only when electric current flows through it. (True) (iii) An electromagnet, using a single cell, attracts more iron paper clips than the same electromagnet with a battery of 2 cells. (False) Magnetic Strength ∝ Number of Cells in series (Voltage) Strength (2 cells) > Strength (1 cell) Question 3 An electric current flows through a nichrome wire for a short time. (i) The wire becomes warm. (ii) A magnetic compass placed below the wire is deflected. Choose the correct option: (a) Only (i) is correct (b) Only (ii) is correct (c) Both (i) and (ii) are correc…