The correct answer is (B) B. The magnetic field inside a solenoid is given by B = μ0nI, where n is the number of turns per unit length. Halving turns and doubling current keeps nI constant, so the field remains ...
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Ans. The terminal voltage equation is V = ɛ – Ir, comparing with y = mx + c, the slope is -r and the intercept is ɛ. Thus, the correct answer is (a) -r and ɛ.
Resistance of a bulb is R = V²/P . For 25 W: R₁ = 220²/25 = 1936Ω and for 100 W: R₂ = 220²/100 = 484Ω. Total resistance Rtotal = 1936 + 484 = 2420Ω. Current I = 440/2420 ...
Testosterone is responsible for secondary male characteristics, estradiol for secondary female characteristics and menstrual cycle control, and progesterone prepares the uterus for the implantation of a fertilized egg.
Malfunctioning adrenal cortex, as seen in Addison’s disease, leads to hypoglycemia, weakness, and increased stress susceptibility. Treatment involves glucocorticoids and mineralocorticoids.